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Finding the Fourth Proportional to 269,768.12, 404,564.57 and 89,805.20

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Solution

The fourth proportional to 269,768.12, 404,564.57 and 89,805.20 is: 134,678.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,768.12 : 404,564.57 = 89,805.20 : x
  2. Step 2: Convert to fraction form
    269,768.12/404,564.57 = 89,805.20/x
  3. Step 3: Cross multiply
    269,768.12x = 404,564.57 × 89,805.20
  4. Step 4: Simplify right side
    269,768.12x = 36,331,999,649.92
  5. Step 5: Solve for x
    x = 36,331,999,649.92/269,768.12
  6. Step 6: Final answer
    x = 134,678.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.